Difference between LKXI, LFXI and LTXI packages

Answer:

Question: What is the difference between the LKXI, LFXI and LTXI packages?

Answer: The difference between LKXI, LFXI and LTXI package is only the thickness of the Package.

LKXI - (0.6mm MAX thick) QFN

LFXI - (0.93mm MAX thick) PUNCH QFN

LTXI - (1.00mm MAX thick) SAWN QFN
 
Cypress is moving from punch singulation to sawn singulation. The sawn singulation process is more stable and supports a more reliable supply source for our customers.